package com.eugene.shiftscalendar;

import android.annotation.TargetApi;
import android.app.DatePickerDialog;
import android.appwidget.AppWidgetManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.media.audiofx.BassBoost;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.preference.EditTextPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.preference.RingtonePreference;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.DatePicker;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.ListView;

import java.util.List;

/**
 * A {@link PreferenceActivity} that presents a set of application settings. On
 * handset devices, settings are presented as a single list. On tablets,
 * settings are split by category, with category headers shown to the left of
 * the list of settings.
 * <p>
 * See <a href="http://developer.android.com/design/patterns/settings.html">
 * Android Design: Settings</a> for design guidelines and the <a
 * href="http://developer.android.com/guide/topics/ui/settings.html">Settings
 * API Guide</a> for more information on developing a Settings UI.
 */
public class SettingsActivity extends PreferenceActivity {
    /**
     * Determines whether to always show the simplified settings UI, where
     * settings are presented in a single list. When false, settings are shown
     * as a master/detail two-pane view on tablets. When true, a single pane is
     * shown on tablets.
     */
    private static final boolean ALWAYS_SIMPLE_PREFS = false;


    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);

        setupSimplePreferencesScreen();
    }

    /**
     * Shows the simplified settings UI if the device configuration if the
     * device configuration dictates that a simplified, single-pane UI should be
     * shown.
     */
    private void setupSimplePreferencesScreen() {
        if (!isSimplePreferences(this)) {
            return;
        }

        addPreferencesFromResource(R.xml.pref_general);

        bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_showShifts)));
        bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_startDate)));
        bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_countryHolidays)));
        bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_theme)));
        bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_restDays)));
        bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_workDays)));
        bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_userChanges)));
    }

    /** {@inheritDoc} */
    @Override
    public boolean onIsMultiPane() {
        return isXLargeTablet(this) && !isSimplePreferences(this);
    }

    /**
     * Helper method to determine if the device has an extra-large screen. For
     * example, 10" tablets are extra-large.
     */
    private static boolean isXLargeTablet(Context context) {
        return (context.getResources().getConfiguration().screenLayout
        & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
    }

    /**
     * Determines whether the simplified settings UI should be shown. This is
     * true if this is forced via {@link #ALWAYS_SIMPLE_PREFS}, or the device
     * doesn't have newer APIs like {@link PreferenceFragment}, or the device
     * doesn't have an extra-large screen. In these cases, a single-pane
     * "simplified" settings UI should be shown.
     */
    private static boolean isSimplePreferences(Context context) {
        return ALWAYS_SIMPLE_PREFS
                || Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
                || !isXLargeTablet(context);
    }

    /** {@inheritDoc} */
   /* @Override
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public void onBuildHeaders(List<Header> target) {
        if (!isSimplePreferences(this)) {
            loadHeadersFromResource(R.xml.pref_headers, target);
        }
    }*/

    /**
     * A preference value change listener that updates the preference's summary
     * to reflect its new value.
     */
    private Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() {
        @Override
        public boolean onPreferenceChange(Preference preference, Object value) {
            SettingsActivity.this.updateParent();

            String stringValue = value.toString();

            if (preference instanceof ListPreference) {
                // For list preferences, look up the correct display value in
                // the preference's 'entries' list.
                ListPreference listPreference = (ListPreference) preference;
                int index = listPreference.findIndexOfValue(stringValue);

                // Set the summary to reflect the new value.
                preference.setSummary( index >= 0 ? listPreference.getEntries()[index] : null);

            } else {
                // For all other preferences, set the summary to the value's
                // simple string representation.
                //preference.setSummary(stringValue);
            }
            return true;
        }
    };

    /**
     * Binds a preference's summary to its value. More specifically, when the
     * preference's value is changed, its summary (line of text below the
     * preference title) is updated to reflect the value. The summary is also
     * immediately updated upon calling this method. The exact display format is
     * dependent on the type of preference.
     *
     * @see #sBindPreferenceSummaryToValueListener
     */
    private void bindPreferenceSummaryToValue(Preference preference) {
        // Set the listener to watch for value changes.
        preference.setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);

        // Trigger the listener immediately with the preference's
        // current value.
        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
        if(preference.getKey().equals(getString(R.string.StrPref_showShifts))){
            sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,sp.getBoolean(preference.getKey(), false));
        }
        else if(preference.getKey().equals(getString(R.string.StrPref_workDays))){
            sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,sp.getString(preference.getKey(), "2"));
        }
        else if(preference.getKey().equals(getString(R.string.StrPref_restDays))){
            sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,sp.getString(preference.getKey(), "2"));
        }
        else if(preference.getKey().equals(getString(R.string.StrPref_userChanges))){
            sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,sp.getBoolean(preference.getKey(), false));
        }
        else if(preference.getKey().equals(getString(R.string.StrPref_countryHolidays))){
            sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,sp.getBoolean(preference.getKey(), false));
        }
        else if(preference.getKey().equals(getString(R.string.StrPref_startDate))){
            sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,sp.getString(preference.getKey(), "01.01.2014"));
        }
        else{
            sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,sp.getString(preference.getKey(), ""));
        }
    }

    /**
     * This fragment shows general preferences only. It is used when the
     * activity is showing a two-pane settings UI.
     */
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public class GeneralPreferenceFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.pref_general);

            // Bind the summaries of EditText/List/Dialog/Ringtone preferences
            // to their values. When their values change, their summaries are
            // updated to reflect the new value, per the Android Design
            // guidelines.
            bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_showShifts)));
            bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_startDate)));
            bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_countryHolidays)));
            bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_theme)));
            bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_restDays)));
            bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_workDays)));
            bindPreferenceSummaryToValue(findPreference(getString(R.string.StrPref_userChanges)));
        }
    }


    void updateParent(){
        Intent intent = new Intent(this, MainWindow.class);
        intent.setAction(MainWindow.ACTION_UPDATE);
        // Use an array and EXTRA_APPWIDGET_IDS instead of AppWidgetManager.EXTRA_APPWIDGET_ID,
        // since it seems the onUpdate() is only fired on that:
        int[] ids = AppWidgetManager.getInstance(getApplication()).getAppWidgetIds(new ComponentName(getApplication(), MainWindow.class));
        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS,ids);
        sendBroadcast(intent);
    }

}
